Ship safety and construction, naval architecture MCQ meo class 4 online questions

121)The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the __________.
A) volume of liquid in the tank
B) volume of displacement of the vessel
C) location of the tank in the vessel
D) height of the center of gravity of the vessel

122)The free surface effects of a partially full liquid tank decrease with increased __________.
A) density of the liquid
B) placement of the tank above the keel
C) displacement volume of the vessel
D) size of the surface area in the tank

123)The free surface correction depends upon the dimensions of the surface of the free liquid and the __________.
A) volume of liquid in the tank
B) displacement of the vessel
C) location of the tank in the vessel
D) height of the center of gravity of the vessel

124)The free surface effects of a partially full tank in a vessel increase with the __________.
A) surface area of the fluid in the tank
B) displacement volume of the vessel
C) draft of the vessel
D) height of the tank above the keel

125)The most detrimental effect on initial stability is a result of liquids __________.
A) flowing from side to side within the vessel
B) flowing from fore to aft within a vessel
C) flowing in and out of a holed wing tank
D) pocketing in a slack tank as a vessel heels

126)The greatest effect on stability occurs from loose liquids flowing __________.
A) from side to side in the tanks of the vessel
B) from fore to aft in the tanks of a vessel
C) in and out of a vessel that is holed in a wing tank
D) in and out of a vessel that is holed in a peak tank

127)Free communication effect is in direct proportion to __________.
A) length and width of space
B) length of space only
C) width of space only
D) neither length nor width

128)Free communication will adversely affect transverse stability only when the flooded space is __________.
A) off-center
B) on the centerline
C) completely flooded
D) open to the sea above and below the waterline

129)What is the principal danger from the liquid in a half full tank onboard a vessel?
A) Corrosion from the shifting liquid
B) Rupturing of bulkheads from the shifting liquid
C) Loss of stability from free surface effect
D) Holing of the tank bottom from the weight of the shifting liquid

130)You are fighting a fire in a cargo hold on your vessel. Which action is most
important concerning the stability of the vessel?
A) Shutting off electricity to damaged cables
B) Draining fire-fighting water and pumping it overboard
C) Maneuvering the vessel so the fire is on the lee side

D) metacentric heightving burned debris from the cargo hold

131)To calculate the free surface correction, it is necessary to divide the freesurface moments by the __________.
A) total weight of liquid loads
B) total displacement
C) lightweight
D) deadweight

132)The correction to KG for transverse free surface effects may be found by dividing the vessel's displacement into the __________.
A) transverse free surface correction for the vessel
B) sum of the vertical moments of the vessel
C) sum of the transverse free surface moments of the vessel
D) transverse baseline of the vessel

133)The correction to KG for longitudinal free surface effects for a vessel can be
found by dividing the vessel's displacement into the __________.
A) transverse free surface correction for the vessel
B) sum of the vertical moments of the vessel
C) sum of the longitudinal free surface moments of the vessel
D) longitudinal centerline of the vessel

134)Reducing the liquid free surfaces in a vessel reduces the __________.
A) roll period
B) metacentric height
C) waterplane area
D) vessel's draft

135)A tank which is NOT completely full or empty is called __________.
A) pressed
Ship construction
B) slack
C) inertial
D) elemental
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136)A tank which carries liquid is dangerous to the stability of a vessel when it is __________.
A) low in the vessel
B) completely empty
C) completely full
D) slack

137)To prevent loss of stability from free communication flooding you should
__________.
A) close the cross-connection valve between the off-center tanks
B) completely flood high center tanks
C) ballast double bottom wing tanks
D) close any opening to the sea in an off-center tank

138)The effect of free surface on initial stability depends upon __________.
A) the amount of liquid in the compartment
B) the dimensions of the liquid surface and the vessel's displacement
C) only the length of the compartment
D) the vertical position of the liquid in the vessel

139)The effects of free surface on a vessel's initial stability do NOT depend upon the __________.
A) volume of displacement of the vessel
B) dimensions of the surface of the liquid
C) amount of liquid in slack tanks
D) specific gravity of the liquid in the tank
140)The most important figure in calculating the free surface constant of a tank
carrying liquids is __________.
Ship construction
A) depth
B) length
C) displacement
D) breadth